How to filter gallery list based on button click

Hi everyone, I have created a Claims Management mobile based application using powerapps that collects the data to Sharepoint list. The problem that im facing right now is the filtering part where i have to filter my gallery list based on button click. I want my gallery list to show the claim request based on the claim type which is(Transportation, Phone Bill and Medical) and also all(means all my 3types of claim together) but i've failed to do so. I have a problem in displaying all my claims but i could view if each of the claim type is selected. I have attached the screenshot of the nessecary information screen. How do i get this right? Can anyone help me with this? All help will be appreciated.